Hi all… I have been looking into this on the Mac and I have not been so far able to reproduce what is being described and appears to be consistent with 2017 behavior.
We have added the ability to select objects the same way you can in SketchUp, (adding the option key to add and shift+option to subtract) but have kept the Command + (select without moving) that works in conjunction with the above.
Does this occur more frequently with certain entity types? Text, SketchUp models, LayOut entities…?
I really want to get to the bottom of this.